Presence of air
Absence of air
High concentration
Presence of ammonium salts
✅ The correct answer is option C.
Chemical Process MCQs
__________ is obtained as a by-product in the manufacture of sodium hydroxide using brine.
Chlorine
Ammonium chloride
Sodium carbonate
Sodium bi-carbonate
✅ The correct answer is option A.
Fermentation of molasses to produce ethyl alcohol is done at __________ °C
20 – 30
< - 5
100 – 150
250 – 300
✅ The correct answer is option A.
Hydrazine is used in water treatment for the removal of
Colloidal impurities
Dissolved oxygen
Turbidity
Chlorinous taste
✅ The correct answer is option B.
Direct conversion of chemical energy into electrical energy is done in a
Magnetohydrodynamic (MHD) generator
Fuel cell
Fast breeder reactor
None of these
✅ The correct answer is option B.
Sodium chloride content in sea water is about __________ gms/litre.
2
10
25
50
✅ The correct answer is option C.
Cement mainly contains
CaO, SiO₂, Al2O₃
MgO, SiO₂, K₂O
Al2O₃, MgO, FE₂O₃
CaO, MgO, K₂O
✅ The correct answer is option A.
Cumene is the starting material for the production of
Benzoic acid
Phenol and acetone
Isoprene
Styrene
✅ The correct answer is option B.
Chemical name of aspirin (an analgesic drug) is
Acetylsalicylic acid
Nictonic acid
Calcium acetate
Methyl salicylate
✅ The correct answer is option A.